<?php

class MhtFileMaker {

    var $config = array();
    var $headers = array();
    var $headers_exists = array();
    var $files = array();
    var $boundary;
    var $dir_base;
    var $page_first;

    function MhtFile($config = array()) {
        
    }

    function SetHeader($header) {
        $this->headers[] = $header;
        $key = strtolower(substr($header, 0, strpos($header, ':')));
        $this->headers_exists[$key] = TRUE;
    }

    function SetFrom($from) {
        $this->SetHeader("From: $from");
    }

    function SetSubject($subject) {
        $this->SetHeader("Subject: $subject");
    }

    function SetDate($date = NULL, $istimestamp = FALSE) {
        if ($date == NULL) {
            $date = time();
        } if ($istimestamp == TRUE) {
            $date = date('D, d M Y H:i:s O', $date);
        } $this->SetHeader("Date: $date");
    }

    function SetBoundary($boundary = NULL) {
        if ($boundary == NULL) {
            $this->boundary = '--' . strtoupper(md5(mt_rand())) . '_MULTIPART_MIXED';
        } else {
            $this->boundary = $boundary;
        }
    }

    function SetBaseDir($dir) {
        $this->dir_base = str_replace("\\", "/", realpath($dir));
    }

    function SetFirstPage($filename) {
        $this->page_first = str_replace("\\", "/", realpath("{$this->dir_base}/$filename"));
    }

    function AutoAddFiles() {
        if (!isset($this->page_first)) {
            exit('Not set the first page.');
        } $filepath = str_replace($this->dir_base, '', $this->page_first);
        $filepath = 'http://mhtfile' . $filepath;
        $this->AddFile($this->page_first, $filepath, NULL);
        $this->AddDir($this->dir_base);
    }

    function AddDir($dir) {
        $handle_dir = opendir($dir);
        while ($filename = readdir($handle_dir)) {
            if (($filename != '.') && ($filename != '..') && ("$dir/$filename" != $this->page_first)) {
                if (is_dir("$dir/$filename")) {
                    $this->AddDir("$dir/$filename");
                } elseif (is_file("$dir/$filename")) {
                    $filepath = str_replace($this->dir_base, '', "$dir/$filename");
                    $filepath = 'http://mhtfile' . $filepath;
                    $this->AddFile("$dir/$filename", $filepath, NULL);
                }
            }
        } closedir($handle_dir);
    }

    function AddFile($filename, $filepath = NULL, $encoding = NULL) {
        if ($filepath == NULL) {
            $filepath = $filename;
        } $mimetype = $this->GetMimeType($filename);
        $filecont = file_get_contents($filename);
        $this->AddContents($filepath, $mimetype, $filecont, $encoding);
    }

    function AddContents($filepath, $mimetype, $filecont, $encoding = NULL) {
        if ($encoding == NULL) {
            $filecont = chunk_split(base64_encode($filecont), 76);
            $encoding = 'base64';
        } $this->files[] = array('filepath' => $filepath, 'mimetype' => $mimetype, 'filecont' => $filecont, 'encoding' => $encoding);
    }

    function CheckHeaders() {
        if (!array_key_exists('date', $this->headers_exists)) {
            $this->SetDate(NULL, TRUE);
        } if ($this->boundary == NULL) {
            $this->SetBoundary();
        }
    }

    function CheckFiles() {
        if (count($this->files) == 0) {
            return FALSE;
        } else {
            return TRUE;
        }
    }

    function GetFile() {
        $this->CheckHeaders();
        if (!$this->CheckFiles()) {
            exit('No file was added.');
        } $contents = implode("\r\n", $this->headers);
        $contents .= "\r\n";
        $contents .= "MIME-Version: 1.0\r\n";
        $contents .= "Content-Type: multipart/related;\r\n";
        $contents .= "\tboundary=\"{$this->boundary}\";\r\n";
        $contents .= "\ttype=\"" . $this->files[0]['mimetype'] . "\"\r\n";
        $contents .= "X-MimeOLE: Produced By Mht File Maker v1.0 beta\r\n";
        $contents .= "\r\n";
        $contents .= "This is a multi-part message in MIME format.\r\n";
        $contents .= "\r\n";
        foreach ($this->files as $file) {
            $contents .= "--{$this->boundary}\r\n";
            $contents .= "Content-Type: $file[mimetype]\r\n";
            $contents .= "Content-Transfer-Encoding: $file[encoding]\r\n";
            $contents .= "Content-Location: $file[filepath]\r\n";
            $contents .= "\r\n";
            $contents .= $file['filecont'];
            $contents .= "\r\n";
        } $contents .= "--{$this->boundary}--\r\n";
        return $contents;
    }

    function MakeFile($filename) {
        $contents = $this->GetFile();
        $fp = fopen($filename, 'w');
        fwrite($fp, $contents);
        fclose($fp);
    }

    function GetMimeType($filename) {
        $pathinfo = pathinfo($filename);
        switch ($pathinfo['extension']) {
            case 'htm': $mimetype = 'text/html';
                break;
            case 'html': $mimetype = 'text/html';
                break;
            case 'txt': $mimetype = 'text/plain';
                break;
            case 'cgi': $mimetype = 'text/plain';
                break;
            case 'php': $mimetype = 'text/plain';
                break;
            case 'css': $mimetype = 'text/css';
                break;
            case 'jpg': $mimetype = 'image/jpeg';
                break;
            case 'jpeg': $mimetype = 'image/jpeg';
                break;
            case 'jpe': $mimetype = 'image/jpeg';
                break;
            case 'gif': $mimetype = 'image/gif';
                break;
            case 'png': $mimetype = 'image/png';
                break;
            default: $mimetype = 'application/octet-stream';
                break;
        } return $mimetype;
    }

}

function getWordDocument($content, $absolutePath = "", $isEraseLink = true) {
    $mht = new MhtFileMaker();
    if ($isEraseLink)
        $content = preg_replace('/<a\s*.*?\s*>(\s*.*?\s*)<\/a>/i', '$1', $content);   //去掉链接

    $images = array();
    $files = array();
    $matches = array();
    //这个算法要求src后的属性值必须使用引号括起来
    if (preg_match_all("/\<img.*?src\=\"(.*?)\"[^>]*>/i", $content, $matches)) {
        $arrPath = $matches[1];
        for ($i = 0; $i < count($arrPath); $i++) {
            $path = $arrPath[$i];
            $imgPath = trim($path);
            if ($imgPath != "") {
                $files[] = $imgPath;
                if (substr($imgPath, 0, 7) == 'http://') {
                    //绝对链接，不加前缀
                } else {
                    $imgPath = $absolutePath . $imgPath;
                }
                $images[] = $imgPath;
            }
        }
    }
    $mht->AddContents("tmp.html", $mht->GetMimeType("tmp.html"), $content);

    for ($i = 0; $i < count($images); $i++) {
        $image = $images[$i];
        if (fopen($image, 'r')) {
            $imgcontent = file_get_contents($image);
            if ($content)
                $mht->AddContents($files[$i], $mht->GetMimeType($image), $imgcontent);
        }
        else {
            echo "file:" . $image . " not exist!<br />";
        }
    }

    return $mht->GetFile();
}